This is essentially a series of layered, rectangular chocolate chip cookies, covered in icing. My Grandma made it for us all the time as kids. It's delicious!

Recipe Summary

prep:
20 mins
cook:
20 mins
additional:
1 hr
total:
1 hr 40 mins
Servings:
12
Yield:
12 servings
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Ingredients

12
Original recipe yields 12 servings
The ingredient list now reflects the servings specified
Ingredient Checklist
Frosting:

Directions

Instructions Checklist
  • Preheat oven to 350 degrees F (175 degrees C). Grease a 10 1/2x15 1/2-inch baking pan and line with waxed paper.

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  • Beat 1 cup butter, brown sugar, and white sugar together in a bowl using an electric mixer until smooth and creamy; add eggs, 1 at a time, beating well after each addition until smooth. Mix 2 teaspoons vanilla extract and salt into creamed butter mixture. Gradually stir flour into creamed butter until just incorporated; fold 1 cup chocolate chips into batter. Spread batter into the prepared pan.

  • Bake in the preheated oven until lightly browned on the edges, 20 to 25 minutes. Remove from oven and cool completely.

  • Melt remaining 1 cup chocolate chips in the top of a double boiler over simmering water, stirring frequently and scraping down the sides with a rubber spatula to avoid scorching. Beat confectioners' sugar and 3/4 cup butter together in a bowl using an electric mixer until smooth; add melted chocolate and 2 teaspoons vanilla extract and mix until frosting is smooth. Spread frosting over cooled cookie cake.

Nutrition Facts

649 calories; protein 5.7g 12% DV; carbohydrates 78.6g 25% DV; fat 37.1g 57% DV; cholesterol 133.2mg 44% DV; sodium 319.8mg 13% DV. Full Nutrition

Reviews (29)

Read More Reviews

Most helpful positive review

Rating: 5 stars
03/11/2015
So quick and easy. my son (2.5yrs old) and I made it in about 10mins for my husband's birthday cake. he's not a cake person so this was great. he liked it! we didn't bother with icing it - didn't need it anyway. we added special sprinkles my son picked out instead. will make again! lots of leftovers for work. Read More
(10)

Most helpful critical review

Rating: 3 stars
11/16/2019
Not bad flavor. I would add more chocolate chips next time. Also took 3 times longer than calculated on recipe to cook through. Read More
(1)
37 Ratings
  • 5 star values: 28
  • 4 star values: 5
  • 3 star values: 4
  • 2 star values: 0
  • 1 star values: 0
Rating: 5 stars
03/10/2015
So quick and easy. my son (2.5yrs old) and I made it in about 10mins for my husband's birthday cake. he's not a cake person so this was great. he liked it! we didn't bother with icing it - didn't need it anyway. we added special sprinkles my son picked out instead. will make again! lots of leftovers for work. Read More
(10)
Rating: 4 stars
02/28/2015
Cake was really tasty! I feel bad that other people gave it a low rating then noted that it was cake consistency so it didn't work on their pizza stone! The name of the recipe is Chocolate Chip Cookie CAKE so yes it does need a pan with edges!!! The frosting has way to much butter in it! I literally have pools of melted butter on the top of my frosting that separated itself! I would look for a different chocolate frosting recipe! Read More
(7)
Rating: 5 stars
09/07/2014
WOW - followed exactly! But... Made as a cake!! Baked for 55 mins Everyone loved - will make again!!! Read More
(6)
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Rating: 4 stars
05/28/2014
This recipe was terrific. I made it for my twins' birthday. I would make it with less sugar next time. I made it in a pizza pan which I lined with parchment paper. I didn't use half of the icing so I put the leftovers in the freezer. It was nice looking and very tastey. I think they will like it for their parties too. Read More
(5)
Rating: 5 stars
01/27/2015
Very rich, but everyone loved it! I cut the recipe in half and used a round Corningware, added M & M's for color instead of chocolate chips. Highly recommend a la mode! Thanks. Read More
(3)
Rating: 4 stars
08/28/2015
Made it tonight for my daughter's birthday tomorrow. Made two with ice cream that I dyed blue in the middle. Came out great. Going now to try and find a good topper for it. Thanks Read More
(1)
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Rating: 3 stars
07/07/2014
Note: It IS really more of a cake-like consistency. I spread the batter on my pizza stone thinking it was a bit thicker more cookie-like to have it almost drip off the stone as it spread during baking. It is very light in texture and yummy! I cut to fit onto a large beautiful glass platter and decorated it for my daughters birthday. May make again. Read More
(1)
Rating: 3 stars
11/16/2019
Not bad flavor. I would add more chocolate chips next time. Also took 3 times longer than calculated on recipe to cook through. Read More
(1)
Rating: 5 stars
08/31/2016
Excellent. I left off the icing and just topped with powdered sugar. A big hit!! Read More